Motor.



-PATBNTBD MAR. 10, 1903.

2 SHETS-SHEET l.

A TTORNE YS,

MOTOR.

G. H. ROTH.

`APPLIOATION FILED JAN. 4, 1902.

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No. 722,328. l PATENTBD MAR. 10, 1903.

O. H. ROTH. A

MOTOR.

APPLICATION FILED JAN. 4, 1902.

I0 MODEL. 2 SHEETS-SHEET 2.

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UN TTED STATES PATENT OFFICE.,

CHARLES II. ROTH, OF CHICAGO, ILLINOIS.

MOTOR.

SPECIFICATION forming part of Letters Patent No. 722,328, dated Marchl0, 1903.

Application led January 4,1902. Serial No. 88,395. (No model) To n/ZZ'la7/,0711, it 'ntf/.y concern/.-

Beit known that I, CHARLES 11. ROTH, a citizen of the United States ofAmerica, and a resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Motors,of which the following is a specification. f,

The main object of my invention is to provide an improved power plantwhich is comparatively inexpensive and requires but littlc attention, sothat same may be used to operate a small electric-lighting system, asfor a private residence, or to furnish other power.

A further and incidental object is to proe vide an improved form ofgas-driven motor which is substantially self-governing and suitable foraccumulating hydraulic power.

I accomplish these objects by the device shown in the accompanyingdrawings, in which- Figurel is an elevation, partly in section, of adevice constructed according to my invention. Fig. 2 is a modilied formof mechanism for operating the exhaust-valve of the pump shown inFig. 1. Fig. 3 is an enlarged sectional view of the clutch 35 of Fig. 2.

The electrical connections in the drawings are shown in diagram, andtheir supports are omitted for the sake of simplicity.

The device shown consists of an elevated tank 1 or accumulator arrangedto supply water under pressure. W'ater is conducted from thepressure-tank 1 to the water-motor 2 by means of a pipe 3 and isdelivered from said motor to the supply-tank L1 by means of the pipe 5.The shaft (5 of the water-motor is directly connected to the shaft 7 ofthe dynamo S. The pipe 3 is provided with a throttle-valve 0 and alsowith a governing-valve 10, which is controlled by the solenoid 11. Thearmature 12 ofthe solenoid 1l is connected to the controlling-lever 13of the valve 10 in such manner that the weight of the armature 12 willtend to open the valve 10. The dynamo 8 causes an electric current inthe wires 14 and 15, and the solenoid 11 is connected to said wires insuch manner as to receive current from the dynamo. The electric currentpassing through the solenoid 11 will tend to lift the armature 12, andthereby close the valve l0. The valve 10 will therefore act check-valve26.

as a governor and regulate the power of the water-motor 2, so as to beequal to that required by the dynamo 8.

The pump 16 consists of a vertically-disposed cylindrical receptacle17,wliich is adapted to contain a gas or liquid under high pressure. Theinlet-pipe 18 connects the tank a with the receptacle 17 and is closedby a check-valve 19, which permits the flow of water toward thereceptacle 17, but prevents a return-dow. The receptacle 17 is alsoconnected at its lower end to the pressure-tank 1 by means of thedelivery-pipe 20, which is also provided with a check-valve 2l, adaptedto permit the water in said pipe to iiow only to the direction of saidpressure-tank. The upper end of the receptacle 17 is provided with agas-port 22, through which gas may be admitted to the interior of saidreceptacle. The check-valve 23 prevents the contents of the receptaclefrom escaping at the port 22. The port 22 connects wit-h themixing-chamber 24. Air is admitted to the mixing-chamber through theport 25, which is controlled by the Gas enters the mixing-chamloer 24through the valve 27, which connects with the gas-supply pipe 28. Thepump 29 connects with the mixing-chamber 24 and is provided with apiston 30, by means of which air and gas are drawn into themixing-chamber 24 and forced through the port 22 into the receptacle 17.The pump 29 is operated by the crank 31, which is mounted on the shaft32. The shaft 32 is journaled at 33 and secured against longitudinalmovement by the collars 34. The shaft 32 is connected, by means of theclutch 35 and the shaft 36, to the shaft 6 of the water-motor 2.

The upper end of the receptacle 17 is provided with an exhaust-port 37,which communicates with the exhaust-pipe 39 and also with the interiorof the receptacle 17 by means of the openings 38. The exhaust-portconsists of a cylindrical shell AIO and a piston-valve 41, which fitsthe interior of the shell 40 and is longitudinally slidable therein. Themovement of the piston 41 is controlled by the piston-rod 42. At theupper end of the piston-rod 42 is an armature 43, which, in conjunctionwith the solenoids te and il5, raises or lowers the pistor14t1 as anelectric current ICO passes through the solenoids 44 and 45,respectively. A float 46 is supported by the surface of the water withinthe receptacle17. The float 46 is secured to the lower end of the rod47, which passes through the top of the receptacle 17 and carries at itsupper end a projecting shoulder 48. The shoulder 48 is adjustable alongthe rod 47. I'Iorizontallydisposed springs 49 and 50 are secu red at 51and 52. A contact-point 53 is secured in a position slightly above thespring 49, and a contact-point 54 is secured below and in a similarrelation tol the spring 50. The wire 55 connects the springs 49 and 50with the wire 15. The contact-point 54 is connected, by means of thewire 56, to the binding-post 57 of the solenoid 44. The contact-point 53is connected to the binding-post 58 of the solenoid 45 by means of thewire 59. The wire 60 connects 'the binding-posts Gland 62 of saidsoleuoids to the wire 14.

At one side and slightly elevated above the receptacle 17 is anauxiliary cylinder 63, which is connected to the lower part of thereceptacle 17 by means of the pipe 64. A Iioat G5 is disposed within thecylinder 63 and has rigidly secured thereto the guide-rod 66, whichpasses loosely through the upper end of the cylinder 63. The lower endof the rod 66 at its point of junction with the float forms a conicalshoulder 67, which is adapted to tightly close the opening 68 in the topof the cylinder 63 when the float 65 is in its uppermostposition.

An induction-coil 69 is secured above the cylinder 63. Pivoted near oneend of the induction-coil 69 is a bell-crank lever 70. A contact-point71 is secured in about the position shown in Fig. 1 and is connected bythe wire 72 to one end of the primary coil of said induction-coil. Theother end of the primary coil is connected by the wire 73 to the wire 14of the main line. The arm 74 of the bell-crank lever is made ofresilient material and is adapted to vibrate between the contact-point71 and the core 75 of the induction-coil 69. r1`he wire 76 connects thebell-crank lever with the wire 15 of the main line. The secondary coilof the induction-coil 69 is connected with the wires 77 and 78, whichterminate in sparking-points 79 in the upper end of the receptacle 10. Acontact-point S0 is connected by the wire 81 to the solenoid 82 and isso located that when the piston-rod 6o' is in its uppermost position thearm S3 of the bell-crank lever will have been pushed by the piston-rod66 into contact with the contact-point 80.A The other arm 74 of saidbell-crank lever 70 will at the same time be brought into contact withthe contact-point 7l. The solenoid S2 is secured to the frame S4concentrically with the shaft 32, and one end of the coil is connectedto the contact-point by the wire 81, while the other end is connected tothe wire 60 by the wire S5. The member 86 of the clutch 35 is splined tothe shaft 32 and is held, by

` most position.

means of the spring 87, in contact with the member S8, which is keyed tothe shaft 36.

In the modification shown in Fig. 2 thc exhaust-valve 89 is operated bymechanical means instead of by the electrical means shown in Fig. 1.Rigidly secured to the top of the val ve S9 is a tubular shank 90, whichextends through the top of the casing 91. The shoulder 92 on the shank90 is adapted to engage the casing 91 and limit the downward movement ofthe `valve S9. A float 93, which is supported by the surface of theliquid within the receptacle 16, is rigidly connected to the rod 94,which passes loosely through the valve-plate 89. The rod 94 is providedwith a conical shoulder 95, which is adapted to close the opening insaid Valveplate. The upper end of the rod 94 is threaded and carriesthereon a nut 96, which is adjustable along said rod. Fitting within theshank and longitudinally slidable therein is a tubular member 97, havingashoulder98 extending across its upper end and havinga shoulder 99 atits lower end adapted to engage the nut 96 on the rod 94. A bell-cranklever 100 is pivoted in the frame 84 and is so disposed that itshorizontal arm 101 extends through the slots 102 and 103 in the shankand member 97. The arm 104 of the bellcrank lever 100 extends upwardlyand is forked and slotted, so as to connect with the member 105 of theclutch 35. The member 105 has rigidly secured thereto the cam 106 and issplined to the shaft 36, so as to be revoluble therewith and slidablethereon. A collar 107 is seated in an annular recess in the member 105and is provided with arms 10S, which engage the slots 109 of thebellcrank lever 100.

The operation of the device shown is as follows: Assume, for example,that the various parts of the mechanism are in the position shown inFig. 1, that the surface of the water in the receptacle 16 is at 110,and that both of the tanks 1 and 4 contain Water, except that t'ne valve41 is in its uppermost position and the exhaust-port 37 is open, and thevalve 9 is open, so as to operate the watermotor 2. The dynamo S will bedriven by the water-motor and an electric current will be caused to passalong the wires 14 and 15. The water discharged from the water-motor 2will enter the tank 4 and will ill the receptacle 16 and accumulate inthe tank 4. When the water in the tank 4 reaches the level 111, thereceptacle 16 will have become filled with water and the fioat 46 willbe in its upper- The shoulder 4S will engage the spring 49 and push sameagainst the contact-point 53, thus closing an electric circuit andcausing a current to pass through the solenoid 45. The action of thesolenoid 45 will draw the armature 43 into the position shown, thuscausing the valve 41 to close the exhaust-openings 3S. Since the spring87 holds the clutch 35 in its closed position, the pump 29 will beoperating at this time, and

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gas and air will be drawn in the mixingchamber 24 and forced through thevalve 23 into the' receptacle 16. The gas passes from the pipe 2Sthrough the valve 27, while air enters through the valve 2G. The mixedair and gas will accumulate in the receptacle 16 until it has sufcientpressure to raise the float 65 to the upper end of the cylinder 63, whenthe opening 68 will be closed by the valve 67, and the rod 66 will forcethe bellcrank lever 70 into contact with the contactpoints 71 and 80,thus closing the circuit, which includes the solenoid 82, and alsoclosing the primary circuit in the induction-coil 69. The current in thesolenoid S2 withdraws the member S6 of the clutch 35 from its contactwith the member' S8, and thereby stops the action of the pump 29. Theprimary circuit of the induction-coil 69 magnetizes the core 75, causesthe arm 74E to vibrate, and induces currents in the secondary coil,which cause a series of sparks to be emitted at 79. The explosivemixture within the receptacle 16 is ignited by said sparks and expands,causing the surface of the water in said receptacle to be pushed downand forcing some of said water through the valve 2l. The valve 19prevents the escape of water into the pipe 18, and the valve 21 preventsthe return of any water which may have entered the pipe 20. Vhen thelevel of the water in the receptacle 16 has been lowered slightly belowthat shown by the line 110, the shoulder 48 will force the spring 50against the contact-point 54 and cause an electric current to passthrough the solenoid 44E. This will draw the armature 43 upwardly andraise the piston 41. The burned gases will pass through the openings 38,then up through the piston 41, and escape into the exhaust-pipe 39. Assoon as the pressure within thereceptacle 16 is released the float 65will fall to the position shown in Fig. 1. Tater from the tank Lt willnow enter the receptacle 16 and when same has become entirely filled theoperation described will be repeated.

The solenoid 11 is connected to the wires 14 and 15 by a shunt-circuit,and its action will depend upon the electric pressure at the dynamo 8.Thus if the electric pressure at the dynamo increases the armature 12 ofthe solenoid 11 will be pulled up and will tend to close the valve 10,and if the electric pressure at the dynamo decreases the armature 12will fall and tend to open the valve 10. The solenoid 11 therefore actsas a governor and automatically adjusts the power of the water-motor 2to conform with the load upon the dynamo S.

In the modified form shown in Figs. 2 and 3 the solenoid 82 and themember 86 of the clutch 35 operate in the manner which has beenhereinbefore described. As the receptacle 17 fills with water the tioat93 is carried upwardly and closes the valve S9. The rod 94: engages theclutch members 86 and 105 into cu gagcment with cach other.

This starts the action of the pump 29, and when the gas within thereceptacle 17 acquires sufficient pressure the oat 65 will rise andforcing the arm 83 of the bell-crank lever 70 against the contact-point8O will cause an electric current to pass through the solenoid 82 andstop the action of the pump 29. Ignition now takes place, as before, andthe gas again expands. As the liquid-level in the receptacle 17 fallsthe float 93 moves downwardly until the nut 96 engages the shoulders 99of the member 97 and drawing same downwardly turns the bell-crank lever100 and throws the clutch member 105 to the left of the position shownin Fig. 2 and out of engagement with the member S6. When the cam 100comes into alinement with the shank 90, it will press downwardly uponsaid shank and open the valve 89, thus permitting the escape of theexhaust-gases. The shoulder 92 of the shank 90 limits the downwardmovement of the valve 89.

It will be seen that numerous details of the device shown may be alteredwithout departing from the spirit of my invention. Itherefore do notconfine myself to such details except as hereinafter limited in theclaims.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination of a liquid-receptacle; an inlet adapted to conductliquid to said receptacle; means for preventing the returnow of saidliquid; an outlet adapted to discharge said liquid from said receptacle;means forl preventing the return-How of said liquid through said outlet;suitable means for admitting gas to said receptacle; means for ignitingsaid gas when a certain quantity of same has entered said receptacle andthereby causing same to expand and force some of the liquid out of saidreceptacle; an exhaustvalve in the upper part of said receptacle; afloat supported by the liquid in said receptacle; and means controlledby the rising and falling of the oat and adapted to open saidexhaust-valve when the liquid-level has been lowered to a certain pointin the receptacle, and to close said exhaust-valve when said liquid hasreturned to a certain higher level in said receptacle.

2. The combination ofa liquid-receptacle; a liquid-supply communicatingtherewith; means for preventing a return-flow of liquid from saidreceptacle to said liquid-supply; a liquid-outlet in said receptacle;means for preventing a return-How of said liquid through said outlet; agas-supply communieating with said receptacle; means for igniting thegas and causing its expansion in said receptacle; means controlled bythe level of the liquid in said receptacle for permitting the escape ofthe expanded gas after the liquid-level has been lowered through suchexpansion.

3. The combination of a liquid-receptacle having an inlet and an outletfor the liquid; a gas-supply communicating with said 'recep- IOO IIO

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tacle; means l'or igniting the gas and causing its expansion in saidreceptacle and thereby lowering the liquid-level in said receptacle;means controlled by the level of the liquid in said receptacle forpermitting the escape of the expanded gas after the liquidlevcl has beenlowered through such expansion.

1l. The combination of a liquid-receptacie having an inlet and an outletfor the liquid; a gas-supply communicating with said receptacle; meansfor igniting the gas and causing its expansion in said receptacle andthereby lowering the liquid-level in said receptacle; an exhaust-valvein the upper part of said receptacle; a float supported by the liquid insaid receptacle; electromagnetic means connected to said l'loat andcoacting with same for controlling the operation of said exhaustvalve.

5. The combination of a liquid-receptacle having an inlet and an outletfor the liquid; suitable means for admitting gas to said receptacle;electromagnetic means for automatically controlling the admission ofsaid gas; means for iguiting said gas and causing same to expand andtherebylower the liquidlevel in said receptacle; an exhaust-valve in theupper part of said receptacle; a iloat supported by the liquid in saidreceptacle; means connected with said float and adapted to open saidexhaust-valve when the surface ot said liquid has been lowered to acertain point in said receptacle; and means for closing saidexhaust-valve when said liquid has returned to a certain higher level insaid receptacle.

G. The combination of a liquid-receptacle having an inlet and an outletfor the liquid; suitable means for admitting gas to said receptacle;means for controlling the admission of said gas; an auxiliary cylinderconnected with said receptacle and extending a considerable distanceabove same; a float supported by the liquid in said auxiliary cylinder;suitable connection between said float and said gas-controlling means,so arranged that the admission of gas will depend upon the position ofsaid iioat; means for igniting said gas and causing same to expand andlower the liquid-level in said receptacle; and means for permitting theescape of the expanded gas after the liquid-level has been loweredthrough such expansion.

7. The combination of a water-motor; a pressure-tank adapted to supplyaliquid under pressure to said motor; a dynamo driven by said motor; asupply-tank for receiving said liquid from said motor; aliquid-receptacle; means for permitting the i'low of the l liquid fromsaid supply-tank into said receptacle but preventing a return-flow;means permitting the flow of said liquid from said receptacle to saidpressure-tank but preventing a return-flow; means for admitting gas tosaid receptacle; electrical means for igniting said gas and causing sameto expand and drive some of the liquid out of said receptacle; a lioatsupported by the liquid in said receptacle; an exhaust-valve in theupper part of said receptacle; electromagnetic means for operating saidexhaust-valve; suitable electrical connection between said iioat and themeans for operating said exhaust-valve, so arranged that the operationof the exhaustvalve will be controlled by the position oi said float; asecond float operated bythe pressure of the liquid in said receptacle;suitable electrical connection between said second float and said gasadmission and ignition means whereby same will be controlled by thelocation of said second float; and suitable connection between saiddynamo and all of said electrical means whereby same will be operated bypower generated by said dynamo.

8. The combination of a water-motor; a pressure-tank adapted to supplyaliquid under pressure to said motor; a dynamo driven by said motor; asupply-tank for receiving said liquid from said motor; aliquid-receptacle; means for permitting the flow of the liquid from saidsupply-tank into said receptacle but preventing a retu rn-iiow; meanspermitting the flow of said liquid from said receptacle to saidpressure-tank but preventing a return-flow; means for admitting gas tosaid receptacle; electrical means for igniting said gas and causing sameto expand and drive some of the liquid in said receptacle; a floatsupported by the liquid in said receptacle; an exhaust-valve in theupper part of said receptacle; electromagnetic means l'or operating saidexhaust-valve; suitable electrical connection between said float and themeans for operating said exhaust-valve, so arranged that the operationof the exhaustvalve will be controlled by the position of said float; asecond float operated by the pressure of the liquid in said receptacle;suitable electrical connection between said second Alloat and said gasadmission and ignition means whereby same will be controlled by thelocation of said second float.

Signed at Chicago this 31st day of December, 1.901.

CHARLES ll. ROTH. lVitnesses:

WM. R. RUMMLER, 'EUGENE A. RUMMLEn.

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